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The DSpace UI developer team decided to implement the new user interface with the  widely used Angular2 client side framework. In addition to delivering a more responsive user experience,  client side frameworks allow for a more rapid development cycle. The UI code is built in TypeScript, a typed super set of JavaScript, that was developed specifically for the implementation of sizable web applications. In facts fact Angular2 itself is developed in TypeScript.

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Npm stands for Node Package Manager. In fact installation instruction for the user interface at GitHub essentially consist of the command 'npm install',  followed by 'npm start' to start a local server.

Typescript

• The Prototype Wiki explains the rational This wiki page explains the rationale for using typescript in ore more detail
• The Official documentation for the TypeScript language includes links to sample code, as well as a live in-browser editor/samples.

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